Fastening-inserting mechanism



Oct. 8, 1929.

Sept 17. 1926 Ami/W08 a Max/W 4 Patented Get. 8, 1929 FRANK n. EWELL, or nasr nnrnen 'warnn, mnssacnnsnrrs, Assrenon T0 UNITED SHOE MACHINERY CORPORATION, OF PATTERSON,

NEW JERSEY 'JETEXV JERSEY, A CCRPQEATION 0F 'FASTEN'INGJNSEBTING IVIEO I-IANISM Application filed September 17,1926. Serial No. 138,051.

are nail-receiving openings, and to press against this heel the heel-seat of a jacked shoe, drivers thereafter reciprocating in the dieblock to effect the insertion of the nails which secure the heel to the shoe. Since heels vary widely in their horizontal dimensions, and since it is desired to keep the nails as close to the periphery as possible to obtain a tight rand-crease, the nailing-designs differ consid ,erably in the area occupied. The breast-nail openings of the larger designs may approac closely to the forward edge of the die-block, while the corresponding openings for the smaller will be spaced a substantial distance from the edge. l/Vith the latter of these nailings, it is found that for some shoes, es-

pecially those having a high arched shank which slopes down sharply to the tread, the

edge of the die-block may contact with the outsole at the shank, and when pressure is applied to the work, preliminary to driving the nails, an indentation is produced which defaces the outsole. To prevent this, the expedient of bevelingthe die-blockhas been resorted to, so the shank remains clear of the edge. This is satisfactory for small heels but, for those which are large, there tends to be an undue removal of. the abutment-surface receiving the pressure opposing the nailing force, the bevel sometimes cutting back into the breast-openings of the larger nailings. Under such conditions these outer or breast-nails may I. tight joint between the heel and heel-seatis not obtained. It therefore may become necessarv to use a plurality of die-blocks, which involves considerable expense and is, of course, troublesome, as the blocks are heavy. It is an object of the present invention to provide a nailing mechanism in which an efficient abutment surface will be afforded for heels not be clinched properly and the desired of all sizes. Thisl accomplish by means of i a die-block or other abutment member, with p the rastenmg-recelving openings of Wl11Cl1 driving members co-operate, said die-block having a portion so movable as to vary the work-engaging surface. In a nailing mechanism, as one by which heels are attached, the lower edge of the die-block, in accordance with lily-invention, contains a depression a jacent to the nail-receiving openings. In this depression a sliding member is mounted to movebetween a point opposite the openings, at which it gives an abutment surface of a dimension such as'to effectively resist the pressure of the largest heel to be nailed, and a point on one side of the openings, this affording a space which the shank-portion of a small-heel shoe may occupy without danger of contact with theblock. Preferably the sliding memberis divided, there being portions movable in the depression toward and from each other.

Inthe accompanying drawing a particular embodimentof my invention is illustrated,

Fig} 1 showing in perspective the nailing mechanism of a heel-attaching machine,;the w die-block of said mechanism being arranged in accordance with this invention;

-Fig. 2 is a broken perspective view of the under-side of the die-block, and

Fig; 3 is a partial section on the line 111-- In of Fig. 1. i

For ageneraldisclosure of the type of heeling machine, a portion of which I have chosen to illustrate, reference may be had to United States Letters Patent .No. 446,885, Pope, February 24, 1901. Of this appears a frame 10 supporting .a horizontal die-block "12in which are nail-receiving openings 14.

As is usually the case, these openings may inelude a multiple of all of the nailing designs which are to be employed, two designs being completely shown and designated as a and 6, these being respectively for the largest and smallest heels to be nailed.

Guided in the frame are vertically reciprocating side rods 16, one only of these appearing in the drawing, said rods carrying upon their upper extremities a top girt 18.

Mounted upon the die-block at the center of with each of the dieblock-openings.

travel of these drivers, under the influence.

the top girt is a plate 20 from which depend multiple drivers 22, there being one alined The of the'side rods, causes them to act upon the nails which have been placed in the die-block openings to drive them into the work.

At 24 appears the upper portion of a ack, this carrying a shoe S, the heel-seat of which is forced against a heel (not shown), and this, in turn, against the die-block opposite the openings in which are the attaching nails. In thepresent instance, the heel to be attached is of such size as to call for the use of the smallest nailing design, so the nails will be loaded into the openings 6.

The forward lower edge of the die-block is recessed, there being-a depression 26 rectangular in transverse section extending between the opposite ends. In the upper wall of this depression ways are formed, shown furnished by a longitudinally extending dovetailed recess 28, which guides in the depression slides 30, 30 having dovetailed proj ections 82 entering the recess 28. The slides may be of such transverse dimensions as to fillthe depression and thus restore the abutment or pressure-receiving surface of the block to its full width. The slides have such an aggregate length. that, when they are moved to the outer extremities of the depression, therewill be left between their inner ends a space suiiicient to receive the widest shank-portion of a shoe having a small heel, for which it is desired to furnish a space at the edge of the die-block opposite the nailreceiving openings 14. On the other hand, when the slides are brought together they complete the abutment surface adjacent to the openings for the satisfactory nailing of the largest heel. In their relation the slides may be secured by set screws el-threaded through them and bearing at their inner eX- tremities against the wall of the depression.

In using the above described organization for nailing small heels in which the breast-nail-openings are substantially spaced from the front of the die-block, the slides 30 are fixed by the screws 34 at the outer extremities of the depression 26. There is thus formed a space into which the shank-portion of the outsole may extend without contact with the block. Therefore, there will be no scoring of the shank whenclamping pressure is applied to the work. When the heel-size is such that the breast-nail-openings approach the front of the block, the slides are moved to a central position with their inner ends together. The blockflis, at the portion co-operating with the shoe, thereby restored to its normal rectangular form in transverse section, presenting a surface for engagement with even the largest heel adjacent to the breast-nails. A firm holding of this portion of the work is therefore assured,

with a perfect clinching of the breast-nails and a tight joint between the heel and heelseat.

Having fully described my invention what I claim as new and desire to secure by Letters Patent of the United States is:

1. The combination with a movable driving member, of an abutment member against which work may be pressed to resist the driving force, said abutment member being provided with a portion movable thereon and arranged to vary the work-engaging surface.

2. The combination with a movable driving member, of an abutment member against which work may be pressed to resist the driving force, said abutment member being provided with a depression, and opposite members arranged'to move toward and from each other in the depression.

3. In a nailing machine, nailing mechanism' including a block provided with nailreceivingopenings, and a slide movable upon the edge of the block adjacent to the openings.

4. In a nailing machine, nailing mechanism including a block provided with nailrcceiving-openings and with a depression along one edge and extending to opposite sides of the nail-receiving-openings, slides movable toward and from each other at opposite ends of the depression, and a securing means for each slide.

5. In a heel-attaching machine, nail driving mechanism including a die-block upon a front edge of which .are ways, and a slide movable upon the ways.

6. In a heel-attaching machine, reciprocatory drivers, a die-block having openings to receive the drivers, a ack co-operating with the die-block and arranged to receive a shoe'to be heeled with its forepart extending beyond the die-block, there being a depression in said die-block adjacent to the shankportion of the jacked shoe, a slide movable in the depression from a point v opposite said shoe to one side thereof, and a securing device for the slide.

In testimony whereof I have signed my name to this specification.

FRANK E. EWELL. 

